typedef struct{
	int *head; 
	int sync;
	int bit_rate;
	int sample;
	int version;
	int layer;
	int crc;
	int padding;
	int channel;
	int emphasis;
	int frame_len;
}header;

int tamanho(FILE *fl);

char *info(FILE *fl, int *tam);

int dados_musica(FILE *fl);

void tag_info(FILE *fl, int tags_len);

int bt_rt(int bit_rate);

int sp_rt(int sample);

header *inicia_header();

header header_prt1(header *hdr, FILE *fl);

header header_prt2(header *hdr);
